Bradnar Vorusmec was formerly a player character. He was a male gnome illusionist assassin. He sometimes clashed with the part in minor ways, such as petty thefts from treasure, or moving out of the way of an attack quietly instead of alerting the others.
Bradnar was killed by the players in June 1162, but presumably escaped permanent death, apparently with a wish or some such.
Eventually, Eran Bloodroot (John) decided to do away with him, stormed into his quarters at Luingroth, attacking him; Bradnar wished Eran dead, which caused Bradnar to (apparently) move forward into the future to a point where Eran was no longer living.
He showed up again at the final battle during the Judgement war. He was slain by Alastor in September of 1163, and can only be resurrected by a greater god. None have yet apparently done so.